I concur with Betty that there are numerous applications exists to check pulse however those are not exact. The mercury gauges are the most precise, however, they have been eliminated of most therapeutic offices. Mechanical gauges and electronic gages are exact just on the off chance that they are frequently adjusted against a mercury gauge or through some other instrument. The mechanized gauges are exceptionally incorrect, particularly when utilized over garments, or in individuals that have overabundance fat on their arms. Thus, there’s no real way to know which machine is generally exact.